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Gazza5555
Member Since: 29 May 2023
Location: kings lynn
Posts: 30
  
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| Need Help and Advice Turbo lag |
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Can some more experienced on hear help me, my car over the last year had developed a very bad turbo lag. yesterday pulling out of a roundabout I put my foot down and the delay was very bad even dangerous is there anything I can do to make this go away or at least improve It. What do you all think?
D4 2015 3.0 v6 it has covered 85,000 Discovery 4 2015 HSE Lux Gauseway Grey
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 26th Jun 2024 6:36 am |
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Flack
Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6305
  
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A few things, check if its been egr'd blanked and that the butterfly valve has been removed, check the Turbo actuator rod is not seized up, clean the Maff sensor and also get a remap on the PCM.
Flack 
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| 26th Jun 2024 7:44 am |
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disco chris
Member Since: 25 Apr 2022
Location: London
Posts: 277
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I had a similar issue pulling onto roundabouts and junctions and it was completely resolved when I cleaned the MAP sensor. 5 minute job and costs nothing so worth a try.
Have a read of the below thread (if you haven't tried cleaning your MAP sensor already).
https://www.disco3.co.uk/forum/go-clean-ma...MAP+sensor
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| 26th Jun 2024 7:59 am |
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Gazza5555
Member Since: 29 May 2023
Location: kings lynn
Posts: 30
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Thanks very much Chris, yes I have cleaned the Map sensor Discovery 4 2015 HSE Lux Gauseway Grey
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| 26th Jun 2024 9:11 am |
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Gazza5555
Member Since: 29 May 2023
Location: kings lynn
Posts: 30
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Hi Flack, is it a simple job to check the Turbo actuator rod is not seized up?
egr has not been blanked Discovery 4 2015 HSE Lux Gauseway Grey
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| 26th Jun 2024 9:15 am |
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Flack
Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6305
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With it being a D4 you need to check the TSOV valve is not stuck, its on the drivers side and is just behind the radiator, its a common thing on the D4. The linkage seize up, its driven by a vacuum pipe from a chamber at the front of the engine.
You need to remove the big pipe and valve to check its working.
Check this thread out
https://www.disco3.co.uk/forum/sticky-tsov...light=TSOV
Flack
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| 27th Jun 2024 8:52 am |
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Gazza5555
Member Since: 29 May 2023
Location: kings lynn
Posts: 30
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Thank you will do that now Discovery 4 2015 HSE Lux Gauseway Grey
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| 27th Jun 2024 2:29 pm |
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sub
Member Since: 04 Jul 2022
Location: Cheshire
Posts: 99
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dupe
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| 27th Jun 2024 7:09 pm |
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Gazza5555
Member Since: 29 May 2023
Location: kings lynn
Posts: 30
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Well thanks for all the help, I have today taken off the cover and found the Turbo actuator rod, it all looks good and free , but I put a lot of WD 40 on and lets see what happens Discovery 4 2015 HSE Lux Gauseway Grey
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| 29th Jun 2024 11:37 am |
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